Engine-valve.



M. G. & H. 1. NEWMAN.

ENGINE VALVE.

APPLICATION FILED FEB. 1, 1915.

1,252,155. 7 m Patnted Jan.1,1918.

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ENGINE VALVE. APPLICATION HLED FEB. 7. I9l6.

Patented Jan.1,191s.'

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55 provided STATES PATENT OFFICE.

MILTON GEORGE NEWMAN AND HAROLD JOHN NEWMAN, OF HURON, SOUTH DAKOTA.

ENGINE-VALVE.

To all whom it may concern Be it known that we, MILTON G. NEWMAN and HAROLD J. NEWMAN, citizens of the United States, residing at Huron, in the county of Beadle and State of South Dakota, have invented new and useful Improvements in Engine-Valves, of whlch the following is a specification.

This invention relates tointernal combustion engines or the-like, and has particular reference to the .valves which control the inlet and outlet ports, the valves embodying among other features a piston operating within a chamber communicating with the engine cylinder.

i The invention aims to provide certain new and useful improvements in the class above mentioned, especially the valve piston construction, and resides in the construction,

combination and arrangement of parts as defined in the claims. i

The nature and advantages of the invention will be better understood from the following description when read in connection 25. with the accompanying drawings, wherein.

like numerals of reference indicate similar parts in the several views and in which a- Figure l'is a side elevation of an engine. Fig. 2 is an enlarged detail sectional view 80 through one of the cylinders.

Fig. 3 is an enlarged horizontal sectional view therethrough. i Fig. 4-is a detail view of one of the piston valves. f Fig. 5 is a detail view of the sleeve there- Fig. 6 wvalve.'

' Referring more particularly to the drawin detail 5 indicates the explosive cylin er of the engine, any number of whlch may of course be employed and in which the istons 6 operate, the latter bein connected y means of the piston rod 7 wit the crank is a top plan view of the piston shaft 8.

Arranged exteriorly and at one side of the cylinder 5"is an intake chamber 9 and an exhaust chamber 10 communicating with the cylinder through the inlet and exhaust pa l-Its e chambers 9 and 10 may be of any suitable size, but preferably extend an appreciable distance beyond the intake and exhaust ports of the cvlinder as shown... The chamber 9 is with an intake port 13, while the chamber 10 is provided with an exhaust Specification of Letters Patent.

and connected with each of the latter by Patented Jan. 1, 1918.

Application filed February 7, 1916. Serial No. 78,828.

port 14, both of which are arranged beyond the respective ports-of the cylinder. Mounted to reci rocate'within each of the chambers 9 an 10 is a piston valve 15, the piston rods 16 of which are associated with the crank shaft 17, in any suitable manner to alternatel impart a reciprocatory movement to t e pistons at the proper time with relation to the intake compression, firing and exhaust strokes respectively of the engine piston 6. The shaft 17 1s geared or otherwise suitably connected with the engine shaft 8 to be driven thereby. As both of the pistons 15 are identical in construction, g-dletail description of one will suflice for The piston 15 is provided atone end with an annular enlargement or flange 19 upon which is adapted to be seated a split resilient sleeve-like packing element 20, having a tendency through its inherent resiliency to expand against the wall of its respective chamber to compensate for wear between the parts. Received between the adjacent longitudinal'edges of the sleeve 20 is a longitudinally extending rib 21 formed on the piston and adapted to prevent circumferential movement of the sleeve relative to the piston as will be readily understood. The longitudinal -movement of the sleeve upon the piston, may be prevented in any suitable manner, but we preferably make use of a cap 22 fitted upon the opposite end of the piston and having the flange portion 23 thereof engaging the adjacent edge or end of the sleeve V20. The flange 23 is provided with diametrically opposed openings adapted to register with a transverse bore in the piston 15, and passed through said openings and bore is asuitable fastening element 24 to hold the cap 22 operatively associated with the piston. As shown 1n. Fi 1, an oil pipe 25 is extended along one side of the valve chambers, means of the branch or extension 26, which is associated with the chamber immediately beneath the port therein. The oil is forced through the pipe 25 and branches 26 into the valve chambers for the urpose of lubricating the parts, in any su table manner, preferably by means 0 a ump (not shown), while one end of the -p1pe leads to the bottom of the motor case for the purpose of returningthe surplus oil thereto.

While we have shown and described. what we now consider the preferred embodiment of the invention we desire to have it understood that we do not'limit ourselves to the precise construction and arrangement of parts herein illustrated, and that various changes may be resorted to when desired as fall within the scope of the appended claims.

What is claimed is 1. In combination, a piston, a flange projecting therefrom and coextensive in length therewith, a second circumferentially disposedflange surrounding one end of the piston, a split expansible sleeve-like member embracing the piston and resting upon the circumferential flange, the adjacent edges of said sleeve contacting the opposed faces of thefirst mentionedflange whereby circumferential movement of the sleeve is prevented, and means for holding the sleeve seated upon the circumferential flange and preventing vertical movement of the sleeve.

2. In combination, a piston, a flange projecting therefrom and coextensive in length therewith, said piston having a transverse restricted bore adjacent one end, a circumferential flange surrounding the opposite end .of the iston, a split expansible sleeve embracing t e piston and seated upon the latter mentioned flange, the adjacent edges of said sleeve being disposed at opposite sides of the first mentioned flange, a flanged cap fitted upon one end of the piston and having diametrically opposed apertures registering with the said bore, and a pin passed through said apertures and bore for holding the cap immovably associated with the piston, said cap cooperating with the circumferential flange to prevent longitudinal movement of the sleeve with respect to the piston.

In testimony whereof we aflix our signatures in presence of two witnesses.

MILTON GEORGE NEWMAN. HAROLD JOHN NEWMAN.

Witnesses: Y

O. S. HAGEN, H. E. CONE. 

